"Tim Grover is the master of mental toughness. This book is the blueprint for discovering what you are capable of achieving, getting results you never imagined, reaching the highest level of success--and then going even higher."
– Kobe Bryant
"I consider Tim Grover to be second to none in his knowledge of sports training, and he was an invaluable part of my training program. He is a take-charge person, with a deliberate but energetic and enthusiastic technique."
– Michael Jordan
"Tim Grover’s insight into leadership and excellence has taken the greats to the top, and his book will do the same for you. Relentless is about breaking the rules that hold you back and trusting your instincts to take you where you want to be."
– Mike "Coach K" Krzyzewski, Duke University and USA Men’s Olympic Basketball head coach, and bestselling author of Leading with the Heart
“This book will do for you what Tim has done for me--take you to the next level, and show you how to be the best at whatever you do. I have unbelievable trust and faith in him.”
– Dwyane Wade
"In all the years that I coached, inspired and trained world class athletes there was no better resource to collaborate with than Tim Grover."
– Pat Riley, 8-time NBA champion and NBA Hall-of-Fame coach
"If you compete at anything--sports or business or life--you need this book. No one knows more than Tim Grover about competitive intensity, killer instinct and crushing the other guy. He is the best at what he does: Creating champions."
– Charles Barkley
“Grover finally marches the public behind the curtain of decades of work with the likes of Jordan and Kobe Bryant, a riveting read that balances the illumination of the work of those stars and how it can apply to everyone else. . . Magnificent.”
– Adrian Wojnarowski, ESPN
Straight up. Relentless...is one of the best books I've ever read.
– Jim Rome
“An opus on successful thinking.”
– Sun Sentinel
"A must-read... Grover calls upon his decades of experience working with the world's most eliteathletes to dissect what it takes not just to succeed, but to be the absolutebest."